Question

What is meant by least distance of distinct version ? How does this change a person when they grow old? How can it be corrected ? What is the name given

Answer 1

Answer:

The Minimum distance between the object and the eye to see it clearly is called least distance of distinct vision. As a person grows old this may decrease due to the thickening of the eye lens. This condition is also called as hypermetropia. It can be corrected using bi focal lens, which is a combination of both convex lens and concave lens.

Hope my answer would have helped you

Explanation:

It is given in the ncert text book